Buchstaber, Witten, Krichever, and Ochanine Genera — Part I

Date:

Talk at Seminar "Automorphic Forms and Their Applications", Faculty of Mathematics, HSE University, Moscow, Russia

Slides: Complete slides (Parts I and II)

We discuss the Buchstaber genus, its associated formal groups, and its relation to the Ochanine, Krichever, and Witten genera. This is the first part of a two-part talk; the continuation was held on 29 September 2026. The complete slides cover both sessions.

Seminar announcement. The talk is based on arXiv:2603.21118 and the joint preprint with Victor Buchstaber, arXiv:2609.15878.